Over the past century, the percent of squirrels in the vicinity of Washington, DC, that are black instead of the more common g ray has been continually increasing. Which of the following statements best explains why this is happening? A. Black squirrels are more visible against tree trunks than gray squirrels. B. Black squirrels are more popular with tourists than gray squirrels. C. Gray squirrels are more comfortable with humans than black squirrels. D. Black squirrels have a survival advantage over gray squirrels.
1 answer:
It’s D. they do have a survival advantage since they are darker.
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Answer:
≈194.7
Explanation:
(547cm^3/590K) / (V2/210K)
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Tritium is an isotope of hydrogen... For Isotopes number of neutrons are different but electrons and protons are same
Answer:
2Fe + 8HCl =2 HFeCl4 + 3H2
Explanation:
Fe + HCl = HFeCl4 + H2
1Fe 1Fe
1H 3H
1Cl 4CL
2Fe + 8HCl =2 HFeCl4 + 3H2
2Fe 2Fe
8H 8H
8Cl 8CL
Answer:
4909.486Kj/mol
Explanation:
the heat would be required to change steam at 100°c to water at 100°c then change the water at that temperature to water at 0°c then change water at 0°c to ice at 0°c then ice at 0°c to ice at -15°c
About 0.3 percent hope this helps